Used with Watts air gaps for vertical installation of reduced pressure zone assemblies. 当减压区(RPZ)总成垂直安装时,用于美国瓦茨气隙上。
A Reduced Pressure Zone(RPZ) Assembly shall be installed at each potential health hazard location to prevent backflow due to backsiphonage and / or backpressure. 在每个潜在健康危害的地方应该安装减压区(RPZ)总成,以防止由于反虹吸和/反压力造成的回流。
When the relief valve opens, as in the accompanying air-in / water-out diagram, the right-hand channel admits air to the top of the reduced pressure zone, relieving the zone vacuum. 当安全阀开启时,伴随着气进/水出隔膜,右侧渠道使得空气进入减压区(RPZ)顶部,消除减压区(RPZ)的真空。